Answer
$25$
Work Step by Step
We are given $z=3-4i$ and $w=5+2i$:
$z*\overline{z}=(3-4i)(3+4i)=3^2+12i-12i-4^2i^2=3^{2}+4^{2}=25$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises - Page 131: 75
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